Alum Creek interlocking on the B&O-PRR Newark Division. Summit interlocking tower looking west toward Columbus. Photo by
Bob McCord from the Collection of John Fuller.

Summit sat on the top of a long grade that
started at the Scioto River in Columbus. It was here that trains
could be switch from one track to another and where, in the steam
days, helper locomotives would be cut off and sent back to Columbus. The
tower had a manual lever plant. It was a B&O tower staffed with a B&O
operator.